Byron Branfield

Asthma is a condition that affects the small tubes which carry air in and out of the lungs, an irritant usually triggers an asthma attack and irritants can vary from person to person. During an attack the muscles around the airways become increasingly narrower and the lining swells, sticky mucus can also build up in the airways which cause further narrowing and the problems associated with asthma, namely a difficulty in breathing.

There are a variety of reasons why people develop asthma, but there are certain factors that can cause it such as :